#include <iostream>
using namespace std;

int main()
{
    int num1,num2,result;
    char suanshu;

    cout<<"enter two zhengshu , sepaerated by space ";
    cin>>num1>>num2;

    cout<<"enter a yuansun fu ";
    cin>>suanshu;

    if(suanshu=='+')
        result=num1+num2;
    else if (suanshu=='-')
        result=num1-num2;
    else if (suanshu == '*')
        result=num1*num2;
    else if (suanshu == '/')
        result=num1/num2;
    else if (suanshu == '%')
        result=num1%num2;
    else{
        cout<<"WRONG WRONG WRONG LOOK BACK AGAIN!!!"<<endl;
        return 0;
    }
    cout<<num1<<suanshu<<num2<<'='<<result<<endl;

    return 10;
}